Unity3d objects that apply SkinnedMeshRender are partially not displayed on the phone

question

The trap in the picture below uses the skinnedmeshRender component:
it runs normally on the computer, and the package printed on the mobile phone:

reason

The number of bones is too small, the reason for packaging settings:

Remember to select Skin Weights in the tab corresponding to levels. Ensure that the value of Skin Weights in Fbx is less than or equal to Project Settings | Skin Weights.